The information architecture of the site would be represented by the hallways that connect the rooms.

This analogy is a great thing to keep in mind as you are building out your site’s information architecture.

The above image illustrates how a typical site structure should look.

At the top of the experience, you have your homepage which will more than likely be the most visited page on the site.

Then the homepage will link out to the site’s main topic silos.

These silos will act as clusters around the given topics your site focuses on.

The major benefit of this being that when search engines crawl these topic clusters they will have a better understanding of what your site is actually about.